git.m6w6.name Git - m6w6/libmemcached/blob - clients/memcat.c

   1 #include "libmemcached/common.h"
   2 #include <stdio.h>
   3 #include <inttypes.h>
   4 #include <string.h>
   5 #include <unistd.h>
   6 #include <getopt.h>
   7 #include <libmemcached/memcached.h>
   8
   9 #include "utilities.h"
  10
  11 #define PROGRAM_NAME "memcat"
  12 #define PROGRAM_DESCRIPTION "Cat a set of key values to stdout."
  13
  14
  15 /* Prototypes */
  16 void options_parse(int argc, char *argv[]);
  17
  18 static int opt_binary= 0;
  19 static int opt_verbose= 0;
  20 static int opt_displayflag= 0;
  21 static char *opt_servers= NULL;
  22 static char *opt_hash= NULL;
  23
  24 int main(int argc, char *argv[])
  25 {
  26   memcached_st *memc;
  27   char *string;
  28   size_t string_length;
  29   uint32_t flags;
  30   memcached_return rc;
  31   memcached_server_st *servers;
  32
  33   options_parse(argc, argv);
  34
  35   if (!opt_servers)
  36   {
  37     char *temp;
  38
  39     if ((temp= getenv("MEMCACHED_SERVERS")))
  40       opt_servers= strdup(temp);
  41     else
  42     {
  43       fprintf(stderr, "No Servers provided\n");
  44       exit(1);
  45     }
  46   }
  47
  48   memc= memcached_create(NULL);
  49   process_hash_option(memc, opt_hash);
  50
  51   servers= memcached_servers_parse(opt_servers);
  52
  53   memcached_server_push(memc, servers);
  54   memcached_server_list_free(servers);
  55   memcached_behavior_set(memc, MEMCACHED_BEHAVIOR_BINARY_PROTOCOL,
  56                          (uint64_t)opt_binary);
  57
  58   while (optind < argc)
  59   {
  60     string= memcached_get(memc, argv[optind], strlen(argv[optind]),
  61                           &string_length, &flags, &rc);
  62     if (rc == MEMCACHED_SUCCESS)
  63     {
  64       if (opt_displayflag)
  65       {
  66         if (opt_verbose)
  67           printf("key: %s\nflags: ", argv[optind]);
  68         printf("%x\n", flags);
  69       }
  70       else
  71       {
  72         if (opt_verbose)
  73           printf("key: %s\nflags: %x\nlength: %zu\nvalue: ",
  74                  argv[optind], flags, string_length);
  75         printf("%.*s\n", (int)string_length, string);
  76         free(string);
  77       }
  78     }
  79     else if (rc != MEMCACHED_NOTFOUND)
  80     {
  81       fprintf(stderr, "memcat: %s: memcache error %s",
  82               argv[optind], memcached_strerror(memc, rc));
  83       if (memc->cached_errno)
  84         fprintf(stderr, " system error %s", strerror(memc->cached_errno));
  85       fprintf(stderr, "\n");
  86     }
  87     optind++;
  88   }
  89
  90   memcached_free(memc);
  91
  92   if (opt_servers)
  93     free(opt_servers);
  94   if (opt_hash)
  95     free(opt_hash);
  96
  97   return 0;
  98 }
  99
 100
 101 void options_parse(int argc, char *argv[])
 102 {
 103   int option_index= 0;
 104   int option_rv;
 105
 106   memcached_programs_help_st help_options[]=
 107   {
 108     {0},
 109   };
 110
 111   static struct option long_options[]=
 112     {
 113       {(OPTIONSTRING)"version", no_argument, NULL, OPT_VERSION},
 114       {(OPTIONSTRING)"help", no_argument, NULL, OPT_HELP},
 115       {(OPTIONSTRING)"verbose", no_argument, &opt_verbose, OPT_VERBOSE},
 116       {(OPTIONSTRING)"debug", no_argument, &opt_verbose, OPT_DEBUG},
 117       {(OPTIONSTRING)"servers", required_argument, NULL, OPT_SERVERS},
 118       {(OPTIONSTRING)"flag", no_argument, &opt_displayflag, OPT_FLAG},
 119       {(OPTIONSTRING)"hash", required_argument, NULL, OPT_HASH},
 120       {(OPTIONSTRING)"binary", no_argument, NULL, OPT_BINARY},
 121       {0, 0, 0, 0},
 122     };
 123
 124   while (1)
 125   {
 126     option_rv= getopt_long(argc, argv, "Vhvds:", long_options, &option_index);
 127     if (option_rv == -1) break;
 128     switch (option_rv)
 129     {
 130     case 0:
 131       break;
 132     case OPT_BINARY:
 133       opt_binary = 1;
 134       break;
 135     case OPT_VERBOSE: /* --verbose or -v */
 136       opt_verbose = OPT_VERBOSE;
 137       break;
 138     case OPT_DEBUG: /* --debug or -d */
 139       opt_verbose = OPT_DEBUG;
 140       break;
 141     case OPT_VERSION: /* --version or -V */
 142       version_command(PROGRAM_NAME);
 143       break;
 144     case OPT_HELP: /* --help or -h */
 145       help_command(PROGRAM_NAME, PROGRAM_DESCRIPTION, long_options, help_options);
 146       break;
 147     case OPT_SERVERS: /* --servers or -s */
 148       opt_servers= strdup(optarg);
 149       break;
 150     case OPT_HASH:
 151       opt_hash= strdup(optarg);
 152       break;
 153     case '?':
 154       /* getopt_long already printed an error message. */
 155       exit(1);
 156     default:
 157       abort();
 158     }
 159   }
 160 }